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You probably already know about this, but If you ever do reinstall your wifes win 11, its possible to do it without linking it to an online account. I managed that on my win 11 and glad I spent the time to figure it out.
https://pureinfotech.com/bypass-internet-connection-install-windows-11/
The detour starts by making sure the computer is not connected to ethernet,
and then at the “Oops, you’ve lost internet connection” or “Let’s connect you to a network” page, instead of connecting, use the “Shift + F10” keyboard shortcut.
Then you type the magic word OOBE\BYPASSNRO
and it will restart, this time giving you an option for "I don't have internet" and end up creating a local account
@forestjohnson @thomholwerda
Not anymore https://www.tomshardware.com/software/windows/microsoft-eliminates-workaround-that-circumvents-microsoft-account-requirement-during-windows-11-installation
There is still a few other ways to bypass it, but at this point just go for LTSC version of Windows. It comes with functional "offline account" button in the installer and so, so much less bloat.